Add accessibilty tests for GlFormCheckbox component

Closes #2535

See merge request gitlab-org/gitlab-ui!4067



Merged-by: Olena Horal-Koretska <ohoralkoretska@gitlab.com>
Approved-by: Pavel Shutsin <pshutsin@gitlab.com>
Approved-by: Denys Mishunov <dmishunov@gitlab.com>
Approved-by: Olena Horal-Koretska <ohoralkoretska@gitlab.com>
Reviewed-by: Denys Mishunov <dmishunov@gitlab.com>
Reviewed-by: Olena Horal-Koretska <ohoralkoretska@gitlab.com>
Co-authored-by: Grace <gcw.chung@gmail.com>

chore(deps): update dependency dompurify to v3.1.0

See merge request gitlab-org/gitlab-ui!4077



Merged-by: Simon Knox <simon@gitlab.com>
Approved-by: Simon Knox <simon@gitlab.com>
Co-authored-by: GitLab Renovate Bot <gitlab-bot@gitlab.com>

test(form-radio): implement a11y tests for GlFormRadio

Closes #2538

See merge request gitlab-org/gitlab-ui!4074



Merged-by: Olena Horal-Koretska <ohoralkoretska@gitlab.com>
Approved-by: Denys Mishunov <dmishunov@gitlab.com>
Approved-by: Olena Horal-Koretska <ohoralkoretska@gitlab.com>
Reviewed-by: Olena Horal-Koretska <ohoralkoretska@gitlab.com>
Co-authored-by: Grace <gcw.chung@gmail.com>

feat(tailwind): add transparent to supported colors

See merge request gitlab-org/gitlab-ui!4084



Merged-by: Peter Hegman <phegman@gitlab.com>
Approved-by: Peter Hegman <phegman@gitlab.com>
Co-authored-by: Paul Gascou-Vaillancourt <paul.gascvail@gmail.com>

# [78.14.0](gitlab-org/gitlab-ui@v78.13.0...v78.14.0) (2024-04-12)

### Features

* **tailwind:** add transparent to supported colors ([8b432282](gitlab-org/gitlab-ui@8b432282))